This research highlights .obesity is a medical condition that arises as a result of an excess of body fat. Obesity is determined using the body mass index (BMI), which is derived using a person’s weight in kilograms divided by height in meters squared. A person is overweight when the BMI is greater than 25 while obesity is a BMI value of 30 and over. Obesity reduces the quality of a person’s life and makes a person vulnerable to a lot of serious medical complications. Persons suffering from obesity are highly vulnerable to medical complications such as osteoarthritis, high blood pressure, diabetes, heart diseases and certain cancers. With such medical complications within a society, health facilities experience a serious strain as well as high mortality rates.From this essay it is clear that .the World Health Organisation points out that the number of people who are obese is higher than the number of overweight people across the world. Drastic change in lifestyle is the main contributing factor to this phenomenon, where many people have tuned to sedentary lifestyles. This lifestyle does not demand a lot physically. In today’s modern world, majority of people are using personal cars, washing machines, lifts and computers, making them less physically active most of the time. Leisure times such as watching TV while eating foods that have high calorie levels increases further a person’s risk of being obese.